India launches 2% isobutanol-diesel trials, aiming to revive diesel biofuel push
The government, HPCL, ARAI and Tata Motors are testing a 2% isobutanol‑diesel blend in commercial vehicles. If successful, the mix could sidestep earlier ethanol‑diesel failures and open a large‑scale diesel biofuel market, but scaling will need costly retrofits to existing ethanol plants.